Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
topdown.com.br
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-02 12:44:58 UTC · ↺ Refresh
MX Hostnames
- topdown-com-br.mail.protection.outlook.com
MX Priorities
- topdown-com-br.mail.protection.outlook.com: 0
A / AAAA Records
- 192.29.61.237 (no PTR)
Mail Server IPs
- 52.101.50.1 ↩ mail-co1pr05cu00401.inbound.protection.outlook.com
- 52.101.9.2 ↩ mail-mn2pr02cu00202.inbound.protection.outlook.com
- 52.101.194.3 ↩ mail-ch1pr04cu00103.inbound.protection.outlook.com
- 52.101.11.13 ↩ mail-sn1pr0501cu00205.inbound.protection.outlook.com
- 2a01:111:f403:c936:: ↩ mail-cy1pr05cu00400.inbound.protection.outlook.com
- 2a01:111:f403:c927::1 ↩ mail-bn8pr05cu00301.inbound.protection.outlook.com
- 2a01:111:f403:c922:: ↩ mail-bl0pr03cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c946::5 ↩ mail-ch4pr21cu00105.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.p201.dns.oraclecloud.net hostmaster.topdown.com.br 2023102757 3600 600 604800 1800
Primary NS (mname)
ns1.p201.dns.oraclecloud.net
Admin Email (rname)
hostmaster@topdown.com.br
Serial
2023102757
Refresh
3600s
Retry
600s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
ns1.p201.dns.oraclecloud.net
ns3.p201.dns.oraclecloud.net
ns2.p201.dns.oraclecloud.net
ns4.p201.dns.oraclecloud.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_spf.rdstation.com.br include:sendgrid.net -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; rf=afrf; pct=100
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- _dmarc.topdown.com.br| Tipo: TXT| 3600 IN Destino: v=DMARC1; p=none
- google-site-verification=5nWqsjMtxDXRcW_SzbvGoKSYMqHlKlqweQkG4QwZejM
- SPFv=spf1 include:spf.protection.outlook.com include:_spf.rdstation.com.br include:sendgrid.net -all
- MS=ms65576676""MS=8A5311BE61B95CC164A58DBFC0DFC97B6E012AE2
Full email verification for topdown.com.br
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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